Secondary rack



March 19, 1929. w. D. KYLE SECONDARY RACK Filed July 22. 1922 Q a f rv ew Patented Mar. 19, 1929.

UNITED STATES PATENT OFFICE.

WILLIAM D. KYLE, OF MILWAUKEE, WISCONSIN, AS SIGNOR TO LINE MATERIAL COM- PANY, OF SOUTH MILWAUKEE, WISCONSIN, A CORPORATION OF WISCONSIN.

SECONDARY RACK.

Application filed July 22,

The invention relates to insulators and more particularly to so-called secondary racks used in attaching wires to buildings or other supports, and its object is to provide a very inexpensive yet efiieient device, having requisite strength and insulating properties, that may be easily attached to the support and to the wires.

The invention further consists in the several features hereinafter set forth andmore particularly defined by claims at the conclusion hereof.

In the accompanying drawings: Fig. 1 is a side elevation, partly in section, of a rack embodying the invention; Fig. 2 is a detail section taken on the line 2-2 of Fig. 1; Fig. 3 is a section taken on the line 33 of Fig. 1; Fig. 4 is a side elevation of another rack embodying the invention; Fig. 5 is a section taken on the line v5-5 of Fig. 4; and Fig. 6 is a section taken on the line 66 of Fig. 4.

Referring to Figs. 1 to 3, inclusive, the rack embodies a base member 8, such as a 25 channel bar, having openings 9 in the web portion thereof through which U-shaped supporting arms 10 are inserted and which arms may be fixedly held in place by means of bolts 11. Insulator supporting bolts 12 are carried at the outer ends of the U-shaped supporting arms 10 and each bolt passes through an opening 13 formed in ablock 14 of suitable insulating material, such as porcelain.

Each of the insulating blocks 14 is also provided with wire-receiving grooves 15 and 16 in the rear and front ends thereof, respectively, and a transversely extending wire-receiving opening 17. By the use of this form of rack the main feed wire or line wire 18 may be secured to the insulator by a tie wire 19 which passes around the end groove 16 and has its ends 20 secured about the wire 18 so that the tie wire draws the line wire 18 into the groove 15 of the insulator, as shown in Fig. 2. The branch or takeoff wire 21 may be passed through the opening 17 and looped upon itself, as at 22, and its end 23 then brought back and secured in contact with the supply or line wire 18, v and because of the opening 17 this branch wire 21 may be led off at different angles from the rack. It will be understood, of course, that more or less of the insulating 1922. Serial No. 576,757.

blocks 14 may be attached to a base member 18 in the manner previously described.

The construction shown in Figs. 4 and 5 is generally similar to that previously described but in this instance the supporting bracket 24 has arms 25 formed integral therewith and provided with pin-shaped projections 26 having enlarged polygonal heads 27. The headed projections 26 fit into openings 28 in blocks 29 and 30 of insulating material and are firmly secured therein by means of a filling 31 of cement, particularly where the blocks are of porcelain. The insulator block 29 has a rear transverse groove 32 and a front transverse groove 33 similar to the grooves 15 and 16 of the insulator 14 and also a transverse opening 34 similar to the opening 17 so that wires may be attached to this insulator in the same way as shown in connection with the insulator 14. The insulator 30 is provided'with a wire-receiving opening 35, preferably to receive a branch wire, and an annular groove 36 by which a supply wire or line conductor is held to the insulator by a tie wire in a well known manner. The branch wire is attached to the insulator by passing it through the opening 35 and is connected to the supply wire in a manner similar to that shown in Fig. 2.

It will be noted from the foregoing description that a rack construction is provided that enables the branch wire to be con-' nected to the main or line wire in a simple and effective manner.

While I have shown the block formed of insulating material, such as porcelain, it will be understood that this block may be formed of other insulating material, such as molded insulating material, so that the metal parts may be secured in position in such material during the process of molding, in which case a cement filler is not necessary.

What I claim as my invention is:

1. In a wire support, the combination, with a bracket member having a projecting arm, of a one-piece block of insulating material having longitudinally spaced transverse openings disposed one behind the other, and means secured in the rearward of said transverse openings for connecting the block with said arm, the other of said transverse open ings being adapted to receive therethrough a branch conductor in dead-ended relation and said block having a groove behind said forward transverse opening for receiving therein a line conductor adapted to be connected to said branch conductor.

2. In a wire support, the combination, With a bracket member having a projecting arm, of a one-piece block of insulating material having longitudinally-spaced transverse openings disposed one behind the other and also having groove disposed rearwardly of said forward transverse opening, said arm having a portion fixedly secured within said rearward transverse opening,'and said forward transverse openlng being adapted to receive a branch conductor in dead-ended relation.

In testimony whereof, I afiix my signature.

WILLIAM D. KYLE.

a line conductor-receiving 10 

